[RN] Use same video mute indicator icon as on the web

react/features/filmstrip/components/native/VideoMutedIndicator.js

 import React, { Component } from 'react';
-import Icon from 'react-native-vector-icons/FontAwesome';
+
+import { Icon } from '../../../base/font-icons';
 
 import styles from './styles';
 
      * @inheritdoc
      */
     render() {
-        // TODO: This should use video-camera-slash, but that doesn't exist in
-        // the fontawesome icon set yet.
         return (
             <Icon
-                name = 'eye-slash'
+                name = 'camera-disabled'
                 style = { styles.thumbnailIndicator } />
         );
     }